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Petrochemical industries in developing countries : report of the Interregional Petrochemical Symposium on the Development of the Petrochemical Industries in Developing Countries, Baku, USSR, 21 - 31 October 1969
(1970)
Studies in petrochemicals : presented at the United Nations Interregional Conference on the Development of Petrochemical Industries in Developing Countries ; Teheran, Iran, 16 - 30 November 1964
(1966)
Olieraffinaderij en petrochemische industrie : ontstaan, samenstelling, voorkomen van petrochemische complexen
Wever, Egbert, (1974)